Niacin, also known as vitamin B3, is found in a variety of whole and processed foods, with the largest concentrations found in fortified packaged foods, certain vegetables, and animal sources. Here are some foods that are high in niacin:

• Animal sources: beef, chicken, turkey, pork, fish, shellfish, eggs, organ meats such as liver
• Plant-based sources: mushrooms, avocado, whole grains, brown rice, peanuts, green peas, sunflower seeds, lentils, beans
• Fortified foods: many breakfast cereals, breads, and infant formulas contain added niacin

It is important to note that niacin is a water-soluble vitamin, which means that it is not stored in the body and must be consumed through the diet. A balanced diet with a variety of foods is often all that is needed to obtain niacins energy-boosting benefit.